Given g(x)=-3x-4 what is the x value when g(x)=2

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

With finding limits of multi variable !